文献类型：期刊文献

英文题名：Polyamide reverse osmosis membranes containing 1D nanochannels for enhanced water purification

作者：Li, Wen-xuan[1];Yang, Zhe[2];Liu, Wei-liang[1];Huang, Zhi-hao[1];Zhang, Hao[1];Li, Meng-ping[1];Ma, Xiao-hua[1];Tang, Chuyang Y.[2];Xu, Zhen-liang[1]

机构：[1]East China Univ Sci & Technol, Sch Chem Engn, Mei Long Rd 130, Shanghai 200237, Peoples R China;[2]Univ Hong Kong, Dept Civil Engn, Pokfulam, Hong Kong, Peoples R China

年份：2021

卷号：618

外文期刊名：JOURNAL OF MEMBRANE SCIENCE

收录：;EI(收录号：20204109308221);WOS:【SCI-EXPANDED(收录号:WOS:000587434700040)】；

基金：The authors gratefully acknowledge financial support from the National Natural Science Foundation of China, China (21978081) and the Hong Kong Scholars Program, Hong Kong, China (No. XJ2015015).

语种：英文

外文关键词：Thin-film composite membrane; Reverse osmosis; Copper hydroxide nanorods (CuNRs)

摘要：Thin-film composite (TFC) reverse osmosis (RO) membrane is the gold-standard for desalination and water reuse. Recent literature highlights the importance of polyamide (PA) rejection layer containing nanovoids to manipulate the water permeability and salt rejection. In this study, a facile template-assisted approach was applied to generate one-dimensional (1D) nanochannels in the polyamide rejection layer of RO membranes by preloading copper nanorods inside the PA layer followed by acid etching. In addition, a TFC RO membrane containing 0D nanovoids was also fabricated to compare the dimensional effect of nanochannels on membrane morphologies and performances. Specifically, the TFC-0D membrane only exhibited 61% higher water permeability compared to that of the control TFC, while the TFC-1D membrane showed 126% higher water flux with similar NaCl rejection, probably due to the dimensional improvement of the nanochannels inside the rejection layer. This templates-assisted approach paves a feasible way for fabricating high-performance next-generation RO membranes.